Pedal device, and electronic musical instrument including the pedal device

Abstract

Pedal device for an electronic keyboard instrument includes a pedal having opposed side walls extending downward from the opposite side edges, in a width direction, of an upper wall, and a reactive force imparting member which imparts reactive force to the pedal by being pressed by the lower surface of the pedal. The reactive force imparting member includes a plate-shaped base portion mounted on a mounting portion of a support member, and an upwardly-convexed dome-shaped body portion integrally formed with the upper surface of the base portion. The body portion and mounting portion each have a width dimension smaller than a distance between the opposed side walls of the pedal so that, during stroke action of the pedal, the body portion and mounting portion falls within a space between the opposed side walls.

What is claimed is: 
     
       1. A pedal device comprising:
 a pedal having an upper wall, opposed side walls extending downward from opposite side edges of the upper wall that extend in a longitudinal direction of the upper wall, and a space defined under a lower surface of the upper wall between the opposed side walls; 
 a support portion which supports said pedal in such a manner that said pedal is capable of stroke action in an up-down direction; 
 a reactive force imparting member which imparts reactive force to the stroke action of said pedal by being pressed by another member provided on or adjacent to the lower surface of the upper wall of said pedal; and 
 a support member including a flat plate-shaped mounting portion for mounting thereon said reactive force imparting member, 
 wherein said reactive force imparting member includes a plate-shaped base portion mounted on the mounting portion of said support member, an upwardly-convexed, dome-shaped body portion integrally formed on an upper surface of the base portion, and an abutting portion provided on an upper end of the body portion for abutment there against of said pedal, and 
 the body portion of said reactive force imparting member has a width dimension smaller than a distance between the opposed side walls of said pedal so that, during the stroke action of said pedal, the body portion falls within the space between the opposed side walls. 
 
     
     
       2. The pedal device as claimed in  claim 1 , wherein the base portion of said reactive force imparting member has straight opposite side edges extending along the opposed side walls of said pedal,
 the body portion of said reactive force imparting member is of a dome shape having a circular lower end part formed on an upper surface of the base portion between the opposite side edges of the base portion, and 
 projecting engagement portions for fixing the base portion to the mounting portion of said support member are formed on a lower surface of the base portion near the opposite side edges of the base portion, an outer side end, in a width direction of the pedal, of each of the projecting engagement portions being located either at a same position as or inside an outer side end of the lower end part of the body portion. 
 
     
     
       3. The pedal device as claimed in  claim 2 , wherein the lower end part of the body portion of said reactive force imparting member has a width dimension substantially equal to a width dimension of the base portion. 
     
     
       4. The pedal device as claimed in  claim 2 , wherein said support member includes a leg portion connected to a lower surface of the mounting portion, and engaging portions in a form of through-holes formed in the mounting portion for engaging the engagement portions formed on the base portion, and
 the leg portion is connected to the lower surface of the mounting portion inside opposite side edges, in the width direction, of the lower surface of the mounting portion, the engaging portions being disposed between the opposite side edges, in the width direction, of the mounting portion and the leg portion. 
 
     
     
       5. An electronic musical instrument including the pedal device recited in  claim 1 . 
     
     
       6. A pedal device comprising:
 a pedal having an upper wall, opposed side walls extending downward from opposite side edges of the upper wall that extend in a longitudinal direction of the upper wall, and a space defined under a lower surface of the upper wall between the opposed side walls; 
 a support portion which supports said pedal in such a manner that said pedal is capable of stroke action in an up-down direction; 
 a reactive force imparting member provided in the space under the lower surface of said pedal for imparting reactive force to the stroke action of said pedal; and 
 a support member including a pressing portion for pressing said reactive force imparting member, 
 wherein said reactive force imparting member includes a plate-shaped base portion mounted, directly or via another member, on the lower surface of the upper wall, a downwardly-convexed dome-shaped body portion integrally formed on a lower surface of the base portion, and an abutting portion provided on a lower end of the body portion for abutment against the pressing portion, and 
 the pressing portion of said support member has a width dimension smaller than a distance between the opposed side walls of said pedal so that, during the stroke action of said pedal, the pressing portion falls within the space between the opposed side walls. 
 
     
     
       7. An electronic musical instrument including the pedal device recited in  claim 6 .